Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter 1 - Limits and Their Properties - 1.4 Exercises - Page 80: 41

Answer

The function is continuous for all real numbers and has no discontinuities.

Work Step by Step

By Theorem $1.11$: Since both $3x$ and $\cos{x}$ are continuous for all real numbers, $3x-\cos{x}$ is continuous.
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